EP0403041A2 - Injection moulding machine with hydraulic actuators - Google Patents
Injection moulding machine with hydraulic actuators Download PDFInfo
- Publication number
- EP0403041A2 EP0403041A2 EP90250147A EP90250147A EP0403041A2 EP 0403041 A2 EP0403041 A2 EP 0403041A2 EP 90250147 A EP90250147 A EP 90250147A EP 90250147 A EP90250147 A EP 90250147A EP 0403041 A2 EP0403041 A2 EP 0403041A2
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- EP
- European Patent Office
- Prior art keywords
- injection molding
- molding machine
- machine according
- pumps
- speed
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
- B29C2045/824—Accumulators
Definitions
- the invention relates to an injection molding machine according to the features of the preamble of claim 1 and a method for controlling the hydraulic drives according to the preamble of claim 12.
- An injection molding machine is known from EP-02 01 610 A1, in which a servo motor drives a toggle lever clamping unit.
- the motor acts via a chain on the nut of a ball screw.
- the object of the invention is to provide hydraulic drives and a method for controlling these drives in injection molding machines, which moves the individual assemblies in a compact, powerful, fast and low-noise manner and with low energy consumption.
- the individual consumers are directly connected to a pump driven by a servo motor.
- a uniform drive concept is implemented because the drives of all modules, regardless of whether they have a main or secondary function, are driven hydraulically.
- the energy required to drive the hydraulic consumers is only generated when required, since the servo motor can operate in the so-called stop-and-go mode.
- the working energy generated by the pumps is directly supplied to the consumers in a simple manner through pipelines without the interposition of hydraulic control elements such as directional or overflow valves and converted into linear movement.
- the preload pressure required in the closed hydraulic system can be maintained in a structurally simple manner by means of pressure-maintaining pumps or by means of standardized accumulators.
- the power transmission from the generator to the consumer takes place at extremely high speed and is not limited by mechanical elements. The result is a significantly shorter cycle time compared to electro-mechanical injection molding machines.
- the hydraulic system is virtually wear-free.
- the mechanical elements used have their own lubrication due to the medium oil.
- hydraulic systems are not so strong compared to the mechanical system, so that extreme load peaks are avoided. Nevertheless, these hydraulic systems have a high level of rigidity, which enables reproducible values in terms of travel or force. This advantage is further reinforced by the direct power transmission in the closed hydraulic circuit, that is to say without interfering interposition of valves and the like.
- a servo motor including sub-control loop can be replaced by easily switchable couplings, which are arranged between the motor and the pump.
- the advantage of the pump size adapted to the assembly is retained.
- more than one pump can be connected to a servo motor instead of the switchable couplings.
- variable pumps the volume flows of the consumers of the individual assemblies can be freely adjusted both in terms of volume and direction.
- the control system of these standardized variable pumps is simple and is subordinate to the control system of the servo motors.
- the high dynamics that the hydraulics have due to the system is further supported by the method in regulating the injection molding machine according to the invention.
- a subsystem namely a position or force control loop
- the measured values determined on the respective assembly are regulated and converted into a speed value.
- this speed value is used and is compared directly with the actual rotational speed of the pump shaft and, in the event of deviations, is controlled by a servo valve module.
- This control procedure enables a quick analog reaction to changes in the actual behavior of the modules.
- Figures 1 to 3 show an injection unit 12 and a clamping unit 19 with the associated hydraulic consumers, the piston / cylinder units 21, 22.
- a pressure accumulator 90 is connected to the closed hydraulic system.
- the constant pumps 311 and 321 are connected to motors 41 and 42 independently of one another.
- the constant pumps 311 and 321 are connected to the motor 48 via the couplings 61 and 62 and a transfer case 70.
- the clutches 61, 62 can be switched from the outside by the clutch control 69.
- a motor 48 is provided, which is connected to variable displacement pumps 312 and 322 via the transfer case 70.
- FIG. 4 shows the constant pump 311, which is connected to a hydraulic consumer 20, namely the piston / cylinder unit 21, which moves the closed position designed as a toggle lever 11.
- the disposition of the clamping unit 11 is detected by measuring elements 50, namely the position sensor 51.
- the position value x is fed to the position control loop 81, compared with a setpoint value w and output as the speed value v.
- This value v is fed as a speed setpoint to a speed control circuit 82 and compared with the current rotational speed of the motor 41 and, in the event of a deviation, is controlled by means of a servo drive module 49.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Spritzgießmaschine gemäß den Merkmalen des Oberbegriffs des Anspruchs 1 und ein Verfahren zur Regelung der hydraulischen Antriebe gemäß Oberbegriff des Anspruchs 12.The invention relates to an injection molding machine according to the features of the preamble of claim 1 and a method for controlling the hydraulic drives according to the preamble of
Aus EP-02 01 610 A1 ist eine Spritzgießmaschine bekannt, bei der ein Servomotor eine Kniehebelschließeinheit antreibt. Der Motor wirkt hierbei über eine Kette auf die Mutter einer Kugelspindel.An injection molding machine is known from EP-02 01 610 A1, in which a servo motor drives a toggle lever clamping unit. The motor acts via a chain on the nut of a ball screw.
Bei dieser Bauart wird mechanisch durch Rotation eine Linearbewegung erzeugt, mit dem Nachteil nicht vermeidbaren Verschleißes der mechanischen Elemente. Darüber hinaus ist die Drehzahl der Antriebseinheit zur Vermeidung der Zerstörung des Kugelspindelsystems und zur Verhinderung hoher Laufgeräusche begrenzt.In this design, a linear movement is generated mechanically by rotation, with the disadvantage of unavoidable wear on the mechanical elements. In addition, the speed of the drive unit is limited to avoid destroying the ball screw system and to prevent high running noises.
Aus DE-AS 15 29 933 ist eine Spritzgießmaschine mit hydraulischen Verbrauchern einzelner Baugruppen bekannt. Die Hydraulikanlagen solcher Maschinen weisen üblicherweise eine zentrale Druckerzeugungsstation auf, bei der ein Elektromotor eine Konstantpumpe oder eine Pumpe mit veränderbarer Fördermenge antreibt und die Druck- und Volumensteuerung des Hydrauliksystems über Ventile bewirkt wird.From DE-AS 15 29 933 an injection molding machine with hydraulic consumers of individual assemblies is known. The hydraulic systems of such machines usually have a central pressure generating station, in which an electric motor drives a constant pump or a pump with a variable delivery rate, and the pressure and Volume control of the hydraulic system is effected via valves.
Neben der Geräuschbelastung durch den Dauerbetrieb von Motor und Pumpe weisen derartige Antriebe von Spritzgießmaschinen den Nachteil hohen Energieverbrauchs auf. Darüber hinaus ist das Regelverhalten dieser hydraulisch getriebenen Spritzgießmaschinen auch beim Einsatz von Servoventilen und Regelpumpen relativ träge.In addition to the noise pollution caused by the continuous operation of the motor and pump, such drives of injection molding machines have the disadvantage of high energy consumption. In addition, the control behavior of these hydraulically driven injection molding machines is relatively slow even when using servo valves and control pumps.
Aufgabe der Erfindung ist es, hydraulische Antriebe und ein Verfahren zur Regelung dieser Antriebe bei Spritzgießmaschinen zu schaffen, die bei kompakter Bauweise leistungsstark, schnell und dabei geräuschgemindert sowie energiearm die einzelnen Baugruppen bewegt.The object of the invention is to provide hydraulic drives and a method for controlling these drives in injection molding machines, which moves the individual assemblies in a compact, powerful, fast and low-noise manner and with low energy consumption.
Die Erfindung löst diese Aufgabe durch die kennzeichnenden Merkmale der Ansprüche 1 und 12.The invention solves this problem by the characterizing features of
Die einzelnen Verbraucher sind unmittelbar mit einer durch einen Servomotor getriebene Pumpe verbunden. Es wird ein einheitliches Antriebskonzept verwirklicht, da die Antriebe aller Baugruppen, unabhängig ob sie eine Haupt- oder Nebenfunktion erfüllen, hydraulisch getrieben werden.The individual consumers are directly connected to a pump driven by a servo motor. A uniform drive concept is implemented because the drives of all modules, regardless of whether they have a main or secondary function, are driven hydraulically.
Die zum Antreiben der hydraulischen Verbraucher erforderliche Energie wird nur bei Bedarf erzeugt, da der Servomotor im sogenannten Stop-and-Go-Betieb arbeiten kann. Die durch die Pumpen erzeugte Arbeitsenergie wird in einfacher Weise durch Rohrleitungen ohne Zwischenschaltung von hydraulischen Steuerungselementen wie Wege- oder Überstromventile unmittelbar den Verbrauchern zugeführt und in lineare Bewegung umgesetzt.The energy required to drive the hydraulic consumers is only generated when required, since the servo motor can operate in the so-called stop-and-go mode. The working energy generated by the pumps is directly supplied to the consumers in a simple manner through pipelines without the interposition of hydraulic control elements such as directional or overflow valves and converted into linear movement.
Ein Einbau dieser Antriebe ist ohne besonderen Aufwand in bestehende Antriebssystem möglich.These drives can be installed in existing drive systems without any special effort.
Der im geschlossenen Hydrauliksystem erforderliche Vorspanndruck kann in baulich einfacher Weise durch Druckhaltepumpen oder durch standardisierte Speicher aufrechterhalten werden. Die Kraftübertragung von Erzeuger zum Verbraucher erfolgt mit extrem hoher Geschwindigkeit und ist nicht durch mechanische Elemente begrenzt. Die Folge ist ein im Vergleich zur elektrisch-mechanischen Spritzgießmaschinen deutlich kürzere Zykluszeit.The preload pressure required in the closed hydraulic system can be maintained in a structurally simple manner by means of pressure-maintaining pumps or by means of standardized accumulators. The power transmission from the generator to the consumer takes place at extremely high speed and is not limited by mechanical elements. The result is a significantly shorter cycle time compared to electro-mechanical injection molding machines.
Das Hydrauliksystem ist quasi verschleißfrei. Die zum Einsatz kommenden mechanischen Elemente weisen durch das Medium Öl eine Eigenschmierung auf. Darüber hinaus sind Hydrauliksysteme im Vergleich zum mechanischen System nicht so stark, so daß extreme Belastungsspitzen vermieden werden. Trotzdem weisen diese Hydrauliksysteme eine hohe Steifigkeit auf, die reproduzierbare Werte bezüglich des Weges oder der Kraft ermöglichen. Verstärkt wird dieser Vorteil noch durch die unmittelbare Leistungsübertragung in dem geschlossenen Hydraulikkreis, also ohne störende Zwischenschaltung von Ventilen und ähnlichem.The hydraulic system is virtually wear-free. The mechanical elements used have their own lubrication due to the medium oil. In addition, hydraulic systems are not so strong compared to the mechanical system, so that extreme load peaks are avoided. Nevertheless, these hydraulic systems have a high level of rigidity, which enables reproducible values in terms of travel or force. This advantage is further reinforced by the direct power transmission in the closed hydraulic circuit, that is to say without interfering interposition of valves and the like.
Die Anzahl der für die Verbraucher der Spritzgießmaschine erforderlichen Bauelemente kann in vorteilhafter Weise verringert oder bei gleicher Anzahl durch einfachere Elemente ersetzt werden. So kann ein Servomotor inklusive Subregelkreis ersetzt werden durch einfach schaltbare Kupplungen, die zwischen Motor und Pumpe angeordnet sind. Der Vorteil der an die Baugruppe angepaßte Pumpengröße bleibt dabei erhalten.The number of components required for the consumers of the injection molding machine can advantageously be reduced or, with the same number, replaced by simpler elements. For example, a servo motor including sub-control loop can be replaced by easily switchable couplings, which are arranged between the motor and the pump. The advantage of the pump size adapted to the assembly is retained.
Statt der schaltbaren Kupplungen können in einer weiteren vorteilhaften Anordnung an einem Servomotor mehr als eine Pumpe angeschlossen werden. Durch den Einsatz von Verstellpumpen können die Volumenströme der Verbraucher der einzelnen Baugruppen sowohl Volumen- wie richtungsmäßig frei eingestellt werden. Das Steuerungssystem dieser standardisierten Verstellpumpen ist einfach ausgeführt und ordnet sich dem Regelsystem der Servomotoren unter.In a further advantageous arrangement, more than one pump can be connected to a servo motor instead of the switchable couplings. Through the use of variable pumps, the volume flows of the consumers of the individual assemblies can be freely adjusted both in terms of volume and direction. The control system of these standardized variable pumps is simple and is subordinate to the control system of the servo motors.
Die hohe Dynamik, die die Hydraulik systembedingt aufweist, wird noch durch das Verfahren bei der Regelung der erfindungsgemäßen Spritzgießmaschine unterstützt. In einem Subsystem, nämlich einem Positions- oder einem Kraftregelkreis, werden die an der jeweiligen Baugruppe ermittelten Meßwerte geregelt und in einen Geschwindigkeitswert umgewandelt. Im Regelkreis des Antriebsmotors wird dieser Geschwindigkeitswert also Sollwert benutzt und unmittelbar mit der Ist-Drehgeschwindigkeit der Pumpenwelle verglichen und bei Abweichungen durch ein Servoventilmodul geregelt.The high dynamics that the hydraulics have due to the system is further supported by the method in regulating the injection molding machine according to the invention. In a subsystem, namely a position or force control loop, the measured values determined on the respective assembly are regulated and converted into a speed value. In the control circuit of the drive motor, this speed value is used and is compared directly with the actual rotational speed of the pump shaft and, in the event of deviations, is controlled by a servo valve module.
Dieses Regelverfahren ermöglicht ein schnelles analoges Reagieren auf Änderungen des Istverhaltens der Baugruppen.This control procedure enables a quick analog reaction to changes in the actual behavior of the modules.
Beispiele der Erfindung sind in den Figuren 1 bis 4 aufgezeigt.Examples of the invention are shown in FIGS. 1 to 4.
Die Figuren 1 bis 3 zeigen eine Spritzeinheit 12 sowie eine Schließeinheit 19 mit den zugehörigen hydraulischen Verbrauchern, den Kolben/Zylindereinheiten 21, 22. An das geschlossene Hydrauliksystem ist ein Druckspeicher 90 angeschlossen.Figures 1 to 3 show an
In den Figuren 1 und 2 sind die hydraulischen Verbraucher 21, 22 kraftmäßig mit den Konstantpumpen 311 und 321 verbunden.In Figures 1 and 2, the
In der Figur 1 sind die Konstantpumpen 311 und 321 unabhängig voneinander mit Motoren 41 und 42 verbunden.In FIG. 1, the
In der Figur 2 sind die Konstantpumpen 311 und 321 über die Kupplungen 61 und 62 und ein Verteilergetriebe 70 mit dem Motor 48 verbunden. Die Kupplungen 61, 62 sind durch die Kupplungssteuerung 69 von außen schaltbar.In FIG. 2, the
In der Figur 3 ist ein Motor 48 vorgesehen, der über das Verteilergetriebe 70 mit Verstellpumpen 312 und 322 verbunden ist.In FIG. 3, a
Die Figur 4 zeigt die Konstantpumpe 311, die mit einem hydraulischen Verbraucher 20, nämlich der Kolben/Zylindereinheit 21 verbunden ist, die die als Kniehebel 11 ausgebildete Schließenheit bewegt. Die Disposition der Schließeinheit 11 wird durch Meßelemente 50, nämlich dem Positionsaufnehmer 51 erfaßt.FIG. 4 shows the
Der Positionswert x wird nach der Erfassung dem Positionsregelkreis 81 zugeführt, mit einem Sollwert w verglichen und als Geschwindigkeitswert v ausgegeben. Dieser Wert v wird als Geschwindigkeitssollwert einem Geschwindigkeitsregelkreis 82 zugeführt und mit der aktuellen Drehgeschwindigkeit des Motors 41 verglichen und bei Abweichung mittels eines Servoantriebmoduls 49 geregelt.After the detection, the position value x is fed to the
Claims (12)
dadurch gekennzeichnet,
daß die hydraulischen Verbraucher (20, 21, 22) mit Pumpen (31, 32) verbunden sind, die von Wechselstrom-Servomotoren (41, 42, 48) angetrieben werden.1. injection molding machine for the production of molded parts made of plastic with hydraulic consumers for individual assemblies, in particular clamping unit, injection unit, ejector and cores,
characterized,
that the hydraulic consumers (20, 21, 22) are connected to pumps (31, 32) which are driven by AC servomotors (41, 42, 48).
dadurch gekennzeichnet,
daß die Wechselstrom-Servomotore (41, 42, 48) frequenzmoduliert sind.2. Injection molding machine according to claim 1,
characterized,
that the AC servomotors (41, 42, 48) are frequency modulated.
dadurch gekennzeichnet,
daß die Servomotore (41, 42, 48) regeltechnisch mit den einzelnen Baugruppen (11, 12) in Verbindung stehen.3. Injection molding machine according to claim 2,
characterized,
that the servomotors (41, 42, 48) are connected to the individual modules (11, 12) in terms of control technology.
dadurch gekennzeichnet,
daß an den Baugruppen (11, 12) Elemente (50, 51) zum Messen der Regelgrößen, nämlich der Position (x) oder der Geschwindigkeit (v) oder der Kraft (P) vorgesehen sind.4. Injection molding machine according to claim 3,
characterized,
that elements (50, 51) for measuring the controlled variables, namely the position (x) or the speed (v) or the force (P) are provided on the assemblies (11, 12).
dadurch gekennzeichnet,
daß die Pumpen (31, 32) eine Bauart (311, 321) besitzen, die in beiden Drehrichtungen einen von der Drehzahl abhängigen Volumenstrom aufweisen.5. Injection molding machine according to claim 1,
characterized,
that the pumps (31, 32) have a type (311, 321) which have a volume-dependent volume flow in both directions of rotation.
dadurch gekennzeichnet,
daß an einem der Wechselstrom-Servomotore (41, 42, 48) mindestens zwei Kupplungen (61, 62) angeordnet sind, an denen jeweils eine Pumpe (311, 321) ankuppelbar ist.6. Injection molding machine according to claim 5,
characterized,
that at least two couplings (61, 62) are arranged on one of the AC servomotors (41, 42, 48), to each of which a pump (311, 321) can be coupled.
dadurch gekennzeichnet,
daß die Kupplungen (61, 62) fremdgesteuert (69) schaltbar sind.7. Injection molding machine according to claim 6,
characterized,
that the couplings (61, 62) are externally controlled (69) switchable.
dadurch gekennzeichnet,
daß die Pumpen (31, 32) eine Bauart (312, 322) aufweisen, die eine fremdgesteuerte Volumenänderung ermöglicht.8. Injection molding machine according to claim 1,
characterized,
that the pumps (31, 32) have a type (312, 322) that enables an externally controlled volume change.
dadurch gekennzeichnet,
daß mindestens zwei Pumpen (312, 322) mit einem Wechselstrom-Servomotor (48) verbunden sind.9. injection molding machine according to claim 8,
characterized,
that at least two pumps (312, 322) are connected to an AC servo motor (48).
dadurch gekennzeichnet,
daß am Wechselstrom-Servomotor (40) ein Verteilergetriebe (70) angeordnet ist, das mit mindestens zwei Pumpen (312, 322) verbunden ist.10. Injection molding machine according to claim 9,
characterized,
that a transfer case (70) is arranged on the AC servomotor (40) and is connected to at least two pumps (312, 322).
dadurch gekennzeichnet,
daß zwischen der Pumpe (31, 32) und dem Verbraucher (21, 22) ein Druckspeicher (90) vorgesehen ist.11. Injection molding machine according to claim 10,
characterized,
that a pressure accumulator (90) is provided between the pump (31, 32) and the consumer (21, 22).
dadurch gekennzeichnet,
daß an der jeweiligen Baugruppe (11, 12) der Meßwert (Position x oder Kraft P) erfaßt wird, dieser Meßwert in einem Positions- bzw. Kraftregelkreis (81) mit einem Sollwert (w) verlgichen wird, wobei eine dabei ermittelte Abweichung in einen Geschwindigkeitswert (v) umgewandelt und als Geschwindigkeits-Soll-Wert einem Geschwindigkeitsregelkreis (82) zugeführt wird und nach Vergleich der Ist-Geschwindigkeit des Motors (41) mit dem Geschwindigkeits-Soll-Wert (v) über ein Servoantriebsmodul (49) die Drehgeschwindigkeit des Motors (41) einstellt.12. A method for controlling hydraulic drives of an injection molding machine according to claim 1 and measuring elements for detecting the measured values position (x) or force (P),
characterized,
that the measured value (position x or force P) is detected on the respective assembly (11, 12), this measured value is compared in a position or force control circuit (81) with a desired value (w), with a deviation determined in one Converted speed value (v) and a speed control loop (82) is supplied as the speed setpoint value and after comparing the actual speed of the motor (41) with the speed setpoint value (v) via a servo drive module (49) the rotational speed of the Motors (41) adjusts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3919823 | 1989-06-14 | ||
| DE3919823A DE3919823C3 (en) | 1989-06-14 | 1989-06-14 | Injection molding machine with hydraulic consumers |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0403041A2 true EP0403041A2 (en) | 1990-12-19 |
| EP0403041A3 EP0403041A3 (en) | 1991-07-24 |
| EP0403041B1 EP0403041B1 (en) | 1994-08-31 |
| EP0403041B2 EP0403041B2 (en) | 2001-03-21 |
Family
ID=6382946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90250147A Expired - Lifetime EP0403041B2 (en) | 1989-06-14 | 1990-06-06 | Injection moulding machine with hydraulic actuators |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5093052A (en) |
| EP (1) | EP0403041B2 (en) |
| DE (2) | DE3919823C3 (en) |
| ES (1) | ES2058769T5 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485843A1 (en) * | 1990-11-06 | 1992-05-20 | Sumitomo Heavy Industries, Ltd. | Mold opening/closing control apparatus |
| EP0649722A2 (en) * | 1993-10-18 | 1995-04-26 | Karl Hehl | Hydraulic device |
| EP0649723A2 (en) * | 1993-10-18 | 1995-04-26 | Battenfeld GmbH | Hydraulic actuation system for injection moulding machines |
| EP0752304A1 (en) * | 1995-07-04 | 1997-01-08 | Battenfeld GmbH | Hydraulic system for plastic processing machines, especially for injection moulding machines |
| WO1997005387A1 (en) * | 1995-05-16 | 1997-02-13 | Truninger Ag | Device with at least one hydraulic shaft |
| DE102007007005A1 (en) | 2007-02-08 | 2008-08-14 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| DE102008019501A1 (en) | 2008-04-17 | 2009-10-22 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| DE102011010218A1 (en) | 2011-02-03 | 2012-08-09 | Robert Bosch Gmbh | Method for regulating pressure of fluids delivered by servo pump of electrohydraulic drive system for injection molding machine, involves determining actual pressure from drive moment and time change of rotor position of electric motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4200163A1 (en) * | 1992-01-07 | 1993-07-08 | Juergen Roeper | Automatic regulating system for injection mould closure pressure - has controller which regulates curve of mould closure pressure against time according to corresponding curve of internal mould pressure |
| JP2520832B2 (en) * | 1992-11-27 | 1996-07-31 | 日精樹脂工業株式会社 | Control method of injection molding machine |
| AT400941B (en) * | 1994-03-22 | 1996-04-25 | Engel Gmbh Maschbau | DEVICE FOR SUPPLYING HYDRAULIC CONSUMERS OF AN INJECTION MOLDING MACHINE WITH A PRESSURIZED HYDRAULIC LIQUID |
| IT233154Y1 (en) * | 1994-06-09 | 2000-01-26 | Nestle Italiana Spa | BAG FOR PACKAGING AND EXPOSURE OF MOZZARELLA SHAPES IN THE PRESENCE OF THEIR GOVERNMENT LIQUID. |
| AT401116B (en) * | 1994-06-29 | 1996-06-25 | Battenfeld Kunststoffmasch | Process and apparatus for reducing the required connected power of an electrically driven injection-moulding machine |
| DE19517582C2 (en) * | 1995-05-05 | 1998-08-20 | Mannesmann Ag | Drive for the injection and plasticizing unit of a plastic injection molding machine |
| US5613574A (en) * | 1995-06-23 | 1997-03-25 | Melanson; Charles J. | Ladder mounted tool holster and parts tray |
| US5673885A (en) * | 1995-12-27 | 1997-10-07 | Pham; Paul | Paint tray for a stepladder |
| DE19701671B4 (en) * | 1997-01-18 | 2008-02-14 | Bosch Rexroth Aktiengesellschaft | Drive device for a hydraulic pump and method for supplying at least one variable power consumption consumer with hydraulic energy |
| US6089849A (en) * | 1998-02-27 | 2000-07-18 | Van Dorn Demag Corporation | Hybrid injection molding machine |
| DE10013194B4 (en) * | 2000-03-17 | 2005-02-24 | Festo Ag & Co.Kg | driving device |
| JP3756871B2 (en) * | 2002-11-07 | 2006-03-15 | 日精樹脂工業株式会社 | Power-off method for injection molding machine |
| DE10305134B4 (en) * | 2003-02-07 | 2006-10-26 | Brueninghaus Hydromatik Gmbh | Hydrostatic drive |
| US7176648B2 (en) * | 2004-05-18 | 2007-02-13 | Husky Injection Molding Systems Ltd. | Energy management apparatus and method for injection molding systems |
| CN100424361C (en) * | 2006-03-07 | 2008-10-08 | 太原理工大学 | Closed electrohydraulic controlling system |
| DE102007011442A1 (en) | 2007-03-08 | 2008-09-11 | Robert Bosch Gmbh | closing unit |
| EP2443348B8 (en) * | 2009-06-19 | 2015-09-23 | Husky Injection Molding Systems Ltd. | Kinematic control in a hydraulic system |
| CN102712123B (en) * | 2009-12-23 | 2014-10-29 | 赫斯基注塑系统有限公司 | Injection molding system having a digital displacement pump |
| DE202010017961U1 (en) | 2010-09-20 | 2013-04-17 | Bystronic Laser Ag | Control system for hydraulic press brake |
| AT512322B1 (en) * | 2011-12-30 | 2013-09-15 | Bhdt Gmbh | HYDRAULIC DRIVE FOR A PRESSURE TRANSLATOR |
| GB2529909B (en) | 2014-09-30 | 2016-11-23 | Artemis Intelligent Power Ltd | Industrial system with synthetically commutated variable displacement fluid working machine |
| DE102014114822B4 (en) | 2014-10-13 | 2021-03-25 | Dr. Boy Gmbh & Co. Kg | Hydraulic injection molding machine |
| DE102021111083B4 (en) * | 2021-04-29 | 2023-10-05 | Wittmann Battenfeld Gmbh | Method for monitoring the hydraulic supply system of a plastics processing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE821422C (en) * | 1948-10-02 | 1951-11-19 | Alfred Fischbach | Drive of injection molding machines and presses |
| DE823557C (en) * | 1950-09-22 | 1951-12-03 | Josef Brunnhuber | Valve-free control of hydraulic working pistons |
| FR1518913A (en) * | 1967-02-15 | 1968-03-29 | Puma Soc | Control device for a double-acting cylinder or the like |
| DE1601732A1 (en) * | 1967-03-10 | 1970-12-17 | Hydraudyne N V | Hydraulic system |
| DE1750707A1 (en) * | 1968-05-28 | 1971-04-22 | Ludwig Maurer | Method for controlling the drive of pressurized-medium machine elements, in particular the working cylinders of injection molding machines, blow molding machines and injection blow molding machines |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4120922B1 (en) * | 1958-05-09 | 1996-07-16 | Jerome H Lemelson | Method for molding |
| US3422648A (en) * | 1961-10-02 | 1969-01-21 | Jerome H Lemelson | Extrusion apparatus |
| DE1529933B1 (en) * | 1966-01-07 | 1971-02-25 | Alfred Fischbach | HYDRAULIC DRIVE FOR THE MOLD CLAMPING MOVEMENT AND THE INJECTION PROCESS OF AN INJECTION MOLDING MACHINE |
| DE2021219A1 (en) * | 1970-04-30 | 1971-11-11 | Indramat Gmbh | Device for adjusting the exit gap of plastic machines, in particular plastic blow molding machines of higher performance |
| US3721512A (en) * | 1970-10-22 | 1973-03-20 | Cincinnati Milacron Inc | Plastication control system for injection molding machines |
| US3893792A (en) * | 1973-04-06 | 1975-07-08 | Bbf Group Inc | Controller for injection molding machine |
| US4257755A (en) * | 1974-06-25 | 1981-03-24 | Lemelson Jerome H | Molding system and method |
| DE3309964C2 (en) * | 1983-03-19 | 1985-05-23 | Krauss-Maffei AG, 8000 München | Device for dosing and mixing two or more flowable plastic reaction components |
| JPS61125829A (en) * | 1984-11-24 | 1986-06-13 | Fanuc Ltd | Clamping system in injection molder |
| DE3537421A1 (en) * | 1985-10-21 | 1987-04-23 | Rexroth Mannesmann Gmbh | Plastics processing machine with hydraulic drives |
| DD243668B1 (en) * | 1985-12-02 | 1990-02-28 | Schwerin Plastmaschinen | HYDRAULIC CIRCUIT ARRANGEMENT WITH A REGULAR PUMP COMBINATION FOR INJECTION MOLDING MACHINES |
-
1989
- 1989-06-14 DE DE3919823A patent/DE3919823C3/en not_active Expired - Fee Related
-
1990
- 1990-06-06 ES ES90250147T patent/ES2058769T5/en not_active Expired - Lifetime
- 1990-06-06 EP EP90250147A patent/EP0403041B2/en not_active Expired - Lifetime
- 1990-06-06 DE DE59006950T patent/DE59006950D1/en not_active Expired - Lifetime
- 1990-06-14 US US07/538,382 patent/US5093052A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE821422C (en) * | 1948-10-02 | 1951-11-19 | Alfred Fischbach | Drive of injection molding machines and presses |
| DE823557C (en) * | 1950-09-22 | 1951-12-03 | Josef Brunnhuber | Valve-free control of hydraulic working pistons |
| FR1518913A (en) * | 1967-02-15 | 1968-03-29 | Puma Soc | Control device for a double-acting cylinder or the like |
| DE1601732A1 (en) * | 1967-03-10 | 1970-12-17 | Hydraudyne N V | Hydraulic system |
| DE1750707A1 (en) * | 1968-05-28 | 1971-04-22 | Ludwig Maurer | Method for controlling the drive of pressurized-medium machine elements, in particular the working cylinders of injection molding machines, blow molding machines and injection blow molding machines |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485843A1 (en) * | 1990-11-06 | 1992-05-20 | Sumitomo Heavy Industries, Ltd. | Mold opening/closing control apparatus |
| EP0649722A2 (en) * | 1993-10-18 | 1995-04-26 | Karl Hehl | Hydraulic device |
| EP0649723A2 (en) * | 1993-10-18 | 1995-04-26 | Battenfeld GmbH | Hydraulic actuation system for injection moulding machines |
| EP0649722A3 (en) * | 1993-10-18 | 1995-12-27 | Karl Hehl | Hydraulic device. |
| EP0649723A3 (en) * | 1993-10-18 | 1995-12-27 | Battenfeld Gmbh | Hydraulic actuation system for injection moulding machines. |
| US5580585A (en) * | 1993-10-18 | 1996-12-03 | Battenfeld Gmbh | Hydraulic operational system for an injection molding machine |
| US6379119B1 (en) | 1995-05-16 | 2002-04-30 | Globemag L-P | Hybrid electric and hydraulic actuation system |
| WO1997005387A1 (en) * | 1995-05-16 | 1997-02-13 | Truninger Ag | Device with at least one hydraulic shaft |
| US5762973A (en) * | 1995-07-04 | 1998-06-09 | Battenfeld Gmbh | Hydraulic operating system for plastics processing machines, especially for injection molding machines |
| EP0752304A1 (en) * | 1995-07-04 | 1997-01-08 | Battenfeld GmbH | Hydraulic system for plastic processing machines, especially for injection moulding machines |
| DE102007007005A1 (en) | 2007-02-08 | 2008-08-14 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| WO2008095525A1 (en) | 2007-02-08 | 2008-08-14 | Robert Bosch Gmbh | Electro-hydraulic control arrangement |
| DE102007007005B4 (en) | 2007-02-08 | 2021-12-02 | Robert Bosch Gmbh | Electro-hydraulic control arrangement |
| DE102008019501A1 (en) | 2008-04-17 | 2009-10-22 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| DE102008019501B4 (en) | 2008-04-17 | 2019-03-21 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| DE102011010218A1 (en) | 2011-02-03 | 2012-08-09 | Robert Bosch Gmbh | Method for regulating pressure of fluids delivered by servo pump of electrohydraulic drive system for injection molding machine, involves determining actual pressure from drive moment and time change of rotor position of electric motor |
| DE102011010218B4 (en) | 2011-02-03 | 2019-09-12 | Robert Bosch Gmbh | A method of regulating the pressure of a fluid delivered by a variable speed pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3919823C2 (en) | 1994-07-28 |
| DE3919823A1 (en) | 1990-12-20 |
| ES2058769T3 (en) | 1994-11-01 |
| DE3919823C3 (en) | 1998-04-09 |
| DE59006950D1 (en) | 1994-10-06 |
| EP0403041B1 (en) | 1994-08-31 |
| EP0403041A3 (en) | 1991-07-24 |
| US5093052A (en) | 1992-03-03 |
| EP0403041B2 (en) | 2001-03-21 |
| ES2058769T5 (en) | 2001-05-01 |
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